Classifications

• • A—HUMAN NECESSITIES
  • A43—FOOTWEAR
  • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
  • A43B1/00—Footwear characterised by the material
• • A—HUMAN NECESSITIES
  • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
  • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
  • A01K13/00—Devices for grooming or caring of animals, e.g. curry-combs; Fetlock rings; Tail-holders; Devices for preventing crib-biting; Washing devices; Protection against weather conditions or insects
  • A01K13/006—Protective coverings
  • A01K13/007—Leg, hoof or foot protectors
• • A—HUMAN NECESSITIES
  • A41—WEARING APPAREL
  • A41B—SHIRTS; UNDERWEAR; BABY LINEN; HANDKERCHIEFS
  • A41B11/00—Hosiery; Panti-hose
• • A—HUMAN NECESSITIES
  • A43—FOOTWEAR
  • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
  • A43B1/00—Footwear characterised by the material
  • A43B1/10—Footwear characterised by the material made of rubber
• • A—HUMAN NECESSITIES
  • A43—FOOTWEAR
  • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
  • A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
  • A43B23/02—Uppers; Boot legs
  • A43B23/04—Uppers made of one piece; Uppers with inserted gussets
  • A43B23/045—Uppers with inserted gussets
  • A43B23/047—Uppers with inserted gussets the gusset being elastic

Definitions

• This invention relates to foot covers.
• Disposable overshoes are used in hospitals, clinics, operating theatres, clean rooms of manufacturing facilities and many other situations.
• This type of product is not, in the first place, aesthetically pleasing, and is not ideal for walking, being somewhat loose and baggy.
• Foot covers do exist for animals, in particular horses and cattle, but again they have a similar structure as a rubber Wellington boot. They are not intended to be disposable, and they are used for medicinal purposes and are, indeed, not expensive. Reference herein to "foot” is intended to include “hoof or "paw”.
• the present invention provides a foot cover that is truly disposable, in being substantially less expensive even than the disposable overshoes above referred to, while also being more aesthetically pleasing both to wear and to look at, and much more comfortable to move about in. And, while being disposable, the foot cover of the invention can be made more durable than the currently available product, and useful in a wider variety of situations.
• the invention comprises a foot cover comprising an elastically stretchable, homogeneous moulding having a foot-insertion opening which seals elastically to the shoe or leg above the foot, in use.
• the foot insertion opening may be beaded.
• the foot cover may be made of a dip-mouldable material, and may be of, or substantially of, natural rubber latex, polyvinyl chloride, neoprene, styrene composites or nitrile butyl rubber, for example.
• the cover may be fashioned in the form of an overshoe, a boot or a sock, all for human wear.
• foot covers of the invention can also be fashioned for animal wear, adapted for animal hooves or paws.
• Cattle and horses have problems in muddy fields and to medically rectify damaged hooves they are often fitted with an overshoe which is, however, an expensive item and not in the least comfortable for the beast, with the consequence that the animal attempts to cast the device and can injure itself in the process.
• the animal would barely notice its presence, yet it would be perfectly protective and could be made to any desired degree of durability.
• the foot cover of the invention is similar in most respects to a disposable latex examination glove, inasmuch as it is of thin, highly stretchable rubber or like compound. Like rubber gloves, it may be internally powdered, as with talc or corn starch, or internally polymer coated. It may be lined with a textile, for example, a woven or knitted cotton, or cotton flock.
• the foot cover may have a textured or ribbed outer surface, especially on the sole and heel portions thereof, for grip.
• the wall thickness of the foot cover may well be about the same as latex examination gloves, though in view of the potentially heavier duty of a foot cover, heavier qualities will often be preferred.
• a typical range of wall thicknesses will be 0.2 to 1.2 mm.
• Lower portions of the foot cover may typically be thicker than the open ended higher portions.
• the invention also comprises a method for making a foot cover comprising dipping a last shaped former into latex, drying the latex and stripping it from the former.
• latex in this context is meant, of course, any dip coating material that will give similar elastic properties to natural rubber latex.
• Figure 1 is a view of a first embodiment (shoe cover);
• Figure 2 is a view of a second embodiment (boot cover):
• Figure 3a is a view of a third embodiment (pig, sheep, dog, etc);
• Figure 3b is a view of a third embodiment (horse).
• Figure 3 c is a view of a third embodiment (cattle).
• Figure 4 is a view of a last former in a latex dipping operation
• Figure 5 is a view of a bead forming operation
• Figure 6 is a block diagram of a manufacturing process.
• foot covers comprising an elastically stretchable, homogeneous moulding 11, having a foot-insertion opening 12 which seals elastically to the leg above the foot in use.
• the foot insertion opening 12 is beaded, with an integral bead 13 of the same material as the moulding.
• any dip-mouldable material may be used, but natural latex rubber is entirely satisfactory, and is in plentiful supply and inexpensive.
• Other materials may include nitrile butyl rubber neoprene, styrene composites and polyvinyl chloride.
• the cover 11 illustrated in Figure 1 is in the form of an overshoe. However, this is not the conventional form of rubber overshoe, which is of thicker, heavier construction and made usually by moulding in a form, rather than by dip-moulding, with built up heel and thick sole.
• this overshoe is more akin to a stretch latex examination glove, of essentially thin wall thickness and highly stretchable so as to fit tightly over a shoe and have the beaded foot -insertion opening snap back tightly around the leg or at least the ankle or shoe portion thereof.
• Figure 2 illustrates a cover in the shape of a boot, essentially extending further up the leg of the wearer and providing additional waterproofing in sloshy conditions.
• Figures 3a, 3b and 3c illustrate foot covers for animal use. Essentially, they are no more than a short cylindrical bag, closed at one end, sized according to the animal concerned to fit snugly over its hoof, or, as the case may be, its paw, and snap closed at its beaded rim to form a waterproof cover and prevent roll down.
• a wall thickness for heavier animals, heavier duty latex with thicker walls will be appropriate; a wall thickness, however, of only 1.2 mm or even less should provide adequate protection and be reasonably long lasting, readily withstanding a day's grazing.
• the bag may be ergonomically shaped to fit the hoof and lower leg. Two sizes should suffice for each kind of animal and the lengths of each will vary depending upon the specific application of the cover.
• the cover can be internally powdered, for lubrication for ease of donning and doffing, or be internally polymer, e.g. ptfe, coated for the same purpose.
• the cover may also be lined with a textile, e.g. a woven or knitted cotton or a cotton flock.
• the external surface may be textured or ribbed, particularly at the sole and heel, for grip.
• the cover may be provided sterile, as by gamma irradiation, and in a sterile pack.
• the covers are made essentially in the same manner as latex examination gloves, using a last former, however, instead of a hand former.
• Figure 4 illustrates a shoe last shaped former 41 dipping into a latex bath 42.
• the former 41 has a long leg portion, and is suitable for making shoe and boot type covers, merely by adjusting the depth to which it is dipped into the latex.
• the eventual thickness of the cover is determined mainly by the consistency of the latex bath, which determines how much latex attaches to the former, and the length of time the latex is allowed to drain from the former.
• the latex is dried on the former and eventually stripped
• FIG 5 illustrates the production of a beaded rim.
• the former 41 is mounted on a swivelling rod 43, which ensures even application of latex in the bath. After removal from the bath, and part drying, there is a somewhat ragged thin top edge to the moulding. This is rolled down by a rotary brush 44 as the rod 43 swivels so that the brush works on the entire periphery of the former.
• the former is then washed and sent through another drying or curing step, which consolidates the bead formed by the brushing.
• a continuous production line can comprise a large number of formers on a conveyor (block diagram, Figure 6).
• Formers initially pass through a washing step 61 and a drying step 62 before being dipped in coagulant 63.
• the coagulant is then dried at step 64 before the formers enter the main dipping tank 42, from where the required amount of latex is deposited.
• the foot covers are dried under controlled conditions at step 65 to produce the correct level of tackyness. Automatic brush rollers are actuated which produce a bead on each of the foot covers (Fig. 5).
• the foot covers are washed or leached at step 66 on line to remove any water soluble salts arising from the coagulant. If appropriate the foot covers are dipped into a solution of water and corn starch or similar powder at step 67 then subsequently dried under controlled conditions at step 68. The foot covers are at this stage subjected to controlled heat to initially remove excess water from the latex and then to subsequently cure or cross link/ vulcanise the rubber film. The foot covers can then be manually removed from the formers at step 69 and sent for off-line inspection at step 71 then packing at step 72.
• Foot covers as herein described have many advantages over conventional disposable overshoes, including improved waterproofing, much more aesthetic appearance and wear comfort, protection against chemicals, improved durability and lower cost. They can find application not only in those areas where conventional disposable overshoes are currently used, but also in sports, hobbies and pastimes such as angling, bowling and jogging, and as shoe protectors - convenient to carry around, much more so than conventional non-disposable overshoes - for inclement weather conditions. They can be provided to visitors to stately homes, churches, mosques and historic and archeological sites to protect the floor or ground, and can be used, in the boot format, instead of Wellington boots, for gardening and farming, as well as for water sports, where the tight fit and water sealing property would prevent water ingress. Many other uses can be imagined, and, within the general scope of the invention, variants of the basic idea will be apparent for particular end uses.
• Foot covers as herein described for animals have numerous applications - disposable foot covers for animals do not presently exist. In particular, for horses and cattle, they will greatly reduce the chances of hooves suffering in, and due to, inclement and adverse weather conditions. They will have numerous medical uses for protecting hooves which have recently received medical attention and to hold dressings, creams, ointments and sprays in place in an uncontaminated manner.

Landscapes

• Life Sciences & Earth Sciences (AREA)
• Environmental Sciences (AREA)
• Zoology (AREA)
• Animal Husbandry (AREA)
• Biodiversity & Conservation Biology (AREA)
• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
• Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
• Finger-Pressure Massage (AREA)
• Fluid-Damping Devices (AREA)
• Package Frames And Binding Bands (AREA)
• Catching Or Destruction (AREA)
• Gloves (AREA)
• Display Devices Of Pinball Game Machines (AREA)
• Professional, Industrial, Or Sporting Protective Garments (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

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ID=9897558

Family Applications (1)

Country Status (7)

Cited By (2)

Families Citing this family (40)

Citations (7)

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• 2000
  • 2000-08-15 GB GBGB0019949.7A patent/GB0019949D0/en not_active Ceased
• 2001
  • 2001-08-08 WO PCT/GB2001/003552 patent/WO2002013640A1/en active IP Right Grant
  • 2001-08-08 EP EP01954191A patent/EP1309255B1/de not_active Expired - Lifetime
  • 2001-08-08 US US10/344,780 patent/US6931767B2/en not_active Expired - Fee Related
  • 2001-08-08 AU AU2001276535A patent/AU2001276535A1/en not_active Abandoned
  • 2001-08-08 AT AT01954191T patent/ATE369049T1/de not_active IP Right Cessation
  • 2001-08-08 DE DE60129820T patent/DE60129820T2/de not_active Expired - Fee Related

Patent Citations (7)

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